CN108075581B - Stator support member for rotating electric machine and method for manufacturing same - Google Patents
Stator support member for rotating electric machine and method for manufacturing same Download PDFInfo
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- CN108075581B CN108075581B CN201710886730.XA CN201710886730A CN108075581B CN 108075581 B CN108075581 B CN 108075581B CN 201710886730 A CN201710886730 A CN 201710886730A CN 108075581 B CN108075581 B CN 108075581B
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- cooling passage
- passage wall
- stator
- support member
- surface portion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
Abstract
A stator supporting member of a rotary electric machine is provided with a cooling passage formed in the stator supporting member for cooling a stator. The stator support member is manufactured as a cooling channel having an airtight sealing structure so that a cooling fluid can flow along the cooling channel. In particular, the support member having the cooling passage is divided into an annular outer part and an annular inner part (two-piece type), and the annular outer part and the annular inner part, which are separately manufactured, are joined together.
Description
Technical Field
The present disclosure relates to a stator support member of a rotating electrical machine and a manufacturing method thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
In general, an electric machine refers to an energy conversion device that converts electric energy into kinetic energy or converts kinetic energy into electric energy, and includes, for example, an electric motor and a generator.
In an environmentally friendly vehicle such as an electric vehicle, a hybrid electric vehicle, a fuel cell vehicle, and the like, an electric motor is used as a driving source for driving the vehicle. A drive motor for a hybrid electric vehicle employs a concentrated winding segmented core stator.
The concentrated winding segmented core type stator includes a plurality of segmented cores wound with coils, the segmented cores being arranged in a ring shape and press-fitted into an annular support member to support such an arrangement structure.
The support member is divided into a simple-structured support member for supporting the stator, and a support member provided with a cooling passage for cooling the stator that generates a large amount of heat when the motor operates. Further, the support member provided with the cooling passage is divided into a support member provided with the cooling passage formed inside thereof and a support member provided with the cooling passage formed outside thereof.
The support member provided with the cooling passage formed therein is structurally made only by casting using a core material formed of sand, and thus has some limitations in manufacturing. Due to manufacturing limitations, the shape of the cooling passage wall portion surrounding the cooling passage is limited, and due to such a structure that the cooling passage is provided inside the stator supporting member, the quality inspection of the stator supporting member after casting is limited, resulting in difficulty in inspection.
Disclosure of Invention
The present disclosure solves the above-mentioned problems associated with the prior art, and provides a stator support member of a rotary electric machine, which is manufactured to have a cooling passage of an airtight sealed structure formed therein so that a cooling fluid can flow along the cooling passage. The stator support member having the cooling passage therein may be divided into an annular outer part and an annular inner part (two-piece type) with reference to the cooling passage, and then the separately manufactured outer and inner parts are joined together. The present disclosure also provides a method of manufacturing a stator support member.
In one aspect, the present disclosure provides a stator support member of a rotary electric machine for supporting a stator composed of a plurality of segment cores arranged in a ring shape and around which coils are wound. The stator support member includes: an annular outer member provided with a first cooling passage wall surface portion formed on an inner peripheral surface thereof; an annular inner member provided with a second cooling passage wall surface portion formed on an outer peripheral surface thereof; and a cooling passage formed by joining the annular outer member and the annular inner member together, surrounded by the first cooling passage wall face portion and the second cooling passage wall face portion.
In one embodiment, one or more protrusions may be formed on at least one of the first cooling passage wall surface portion and the second cooling passage wall surface portion, and the protrusions may be formed in a rib shape extending on a circumferential surface of the first cooling passage wall surface portion or the second cooling passage wall surface portion.
In one aspect, the present disclosure provides a method of manufacturing a stator support member of a rotary electric machine for supporting a stator formed of a plurality of segment cores arranged in a ring shape and around which coils are wound. The method comprises the following steps: separately forming an annular outer member provided with a first cooling passage wall face formed on an inner peripheral surface and an annular inner member provided with a second cooling passage wall face formed on an outer peripheral surface; and forming a cooling passage surrounded by the first cooling passage wall face portion and the second cooling passage wall face portion by joining the annular outer member and the annular inner member together while the first cooling passage wall face portion and the second cooling passage wall face portion face each other.
In one embodiment, the first joining face portions may be formed at both side ends of the first cooling passage wall face portion of the annular outer member, the second joining face portions may be formed at both side ends of the second cooling passage wall face portion of the annular inner member, and the annular outer member and the annular inner member may be fixed to each other by welding in a state where the first joining face portions and the second joining face portions are in contact with each other at the time of forming the cooling passage.
In another embodiment, the annular outer member and annular inner member may be of simple Contraband
The annular structure of the longitudinal section is formed without other internal shapes, so that the processing can be performed by forging, and defects caused when casting is performed can be avoided.
Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
Drawings
In order that the disclosure may be well understood, various embodiments of the disclosure will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1A is a perspective view of an assembled state between a stator and a support member of a conventional rotating electrical machine;
fig. 1B is a schematic view showing an arrangement between a stator and a support member of a conventional rotary electric machine;
fig. 2A to 2B are schematic views showing a mold for molding a core material and a support member of a conventional rotating electrical machine;
FIGS. 3A to 3B are views showing limitations in manufacturing a conventional support member;
fig. 4A is a view illustrating a stator supporting member of a rotary electric machine according to an embodiment of the present disclosure;
FIG. 4B is a cross-sectional view taken along line A-A of FIG. 4A;
fig. 5A is a view illustrating an outer part of a stator supporting member in one embodiment of the present disclosure;
FIG. 5B is a cross-sectional view taken along line B-B of FIG. 5A;
fig. 6A is a view showing internal components of a stator support member in one embodiment of the present disclosure;
FIG. 6B is a cross-sectional view taken along line C-C of FIG. 6A;
FIGS. 7A-7B are views showing a cooling passage in a finished state formed by joining an outer member and an inner member together in one embodiment of the present disclosure;
fig. 8A is a view showing a support member in another embodiment of the present disclosure;
FIG. 8B is a cross-sectional view taken along line D-D of FIG. 8A;
fig. 9A is a view showing a support member in other embodiments of the present disclosure; and
fig. 9B is a sectional view taken along line E-E of fig. 9A.
It should be understood that the drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the disclosure. The specific design features disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the particular intended application and use environment.
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.
Detailed Description
Reference will now be made in detail to various embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings and described below. While the disclosure will be described in conjunction with the exemplary embodiments, it will be understood that the description is not intended to limit the disclosure to the exemplary embodiments. On the contrary, the present disclosure is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments within the spirit and scope of the present disclosure.
First, for a better understanding of the present disclosure, a structure of a stator supporting member of a rotating electrical machine manufactured using a core mold and a manufacturing method thereof will be described.
As exemplarily shown in fig. 1A to 1B, the stator support member 100 serves to support a plurality of segment cores 210 arranged in a ring shape so as to fix the ring-shaped arrangement structure.
The concentrated winding segmented core type stator 200 includes segmented cores 210 wound with coils 220, and the segmented cores 210 wound with coils 220 are arranged in a ring shape and press-fitted into the stator support member 100 to support such a ring arrangement structure.
In order to cool the stator 200 that generates a large amount of heat when the rotary electric machine operates, the stator supporting member 100 is provided with the cooling passage 110 (refer to fig. 1B) formed therein, and the cooling passage 110 is formed in a shape extending in the circumferential direction of the stator supporting member 100, i.e., in a ring shape. A plastic bobbin (bobbin)230 for electrical insulation interposed between the stator support member 100 and the stator 200 is disposed between the stator support member 100 and the stator 200.
Such a support member 100 provided with the cooling passage 110 formed therein is formed in one piece, and thus is manufactured by gravity die casting using a core material formed of sand. As exemplarily shown in fig. 2A, the stator support member 100 provided with the cooling channel 110 formed therein is molded in one piece by injecting a casting resin in a molten state into the mold 130 in a state where the core 300 is put into the mold 130, and after the molding of the stator support member 100 is completed, the core 300 and the stator support member 100 are taken out of the mold, and then the core 300 is removed from the stator support member 100. Here, the core material 300 located in the cooling passage 100 is crushed and removed by the washing holes 120 of the stator support member 100.
The core material 300 is molded to have a designated shape by injecting sand mixed with a curing agent or the like into the core mold 310 and then curing the mixture, and as exemplarily shown in fig. 2B, after the molding is completed, the core material 300 is taken out of the core mold 310 by moving the upper mold 311 and the lower mold 312 of the core mold 310 in opposite directions.
Since the moving direction of the upper mold 311 and the lower mold 312 of the core mold 310 should be considered when the core material 300 is taken out from the core mold 310, the shape of the core material 300 is structurally limited. As shown in fig. 3A to 3B, in order to add, for example, the shape of the cooling fin to the support member 100 ', if the core material 300 ' is molded by reflecting the structure corresponding to the shape added to the support member 100 ', the core material 300 ' may not be taken out of the core mold 310 due to interference between the core mold 310 and the core material 300 '.
Due to such a limitation in manufacturing, the shape of the cooling passage wall portion 112 surrounding the cooling passage 110 of the stator support member 100 is limited, and due to such a structure that the cooling passage 110 is provided inside the stator support member 100, quality inspection of the stator support member 100 after casting is limited, thus causing difficulty in inspection.
Accordingly, in the present disclosure, the stator support member is manufactured by: separately forming two annular structures, namely an annular outer part and an annular inner part; the outer part and the inner part are then joined together, and in particular, the outer part and the inner part are respectively formed to be divided from each other in the longitudinal direction in a concentric manner with respect to the cooling passage of the stator supporting member, and when the outer part and the inner part are joined, the cooling passage of the stator supporting member having the sealing structure is completed.
Reference will now be made in detail to various embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings and described below.
Fig. 4A to 4B are views illustrating a stator supporting member of a rotary electric machine in one embodiment of the present disclosure, fig. 5A to 5B are views illustrating an outer part of the stator supporting member in one embodiment of the present disclosure, fig. 6A to 6B are views illustrating an inner part of the stator supporting member in one embodiment of the present disclosure, fig. 7A to 7B are views illustrating a cooling passage of a sealing structure formed by joining the outer part and the inner part together in one embodiment of the present disclosure, fig. 8A to 8B are views illustrating the stator supporting member in another embodiment of the present disclosure, and fig. 9A to 9B are views illustrating the stator supporting member in other embodiments of the present disclosure.
The stator support member 10 has the concentrated winding segmented core type stator press-fitted therein in such a manner as to be located on the inner surface of the stator support member 10, and thus serves to fix the segmented cores arranged in a ring shape. As shown in fig. 4A to 4B, the stator supporting member 10 has an annular structure, and a cooling passage 16 through which a cooling fluid for cooling the stator flows is provided in the stator supporting member 10.
As shown in fig. 4A to 6B, the stator support member 10 includes an outer part 12 and an inner part 14 which are divided from each other in a longitudinal direction in a concentric manner with each other with reference to the cooling passage 16, and when the outer part 12 and the inner part 14 are joined, the cooling passage 16 of the stator support member 10 having a sealing structure is completed so that the cooling fluid can flow along the cooling passage 16 without leakage.
As shown in fig. 5A to 5B, the outer member 12 is an annular belt-like member having a first cooling passage wall face portion 12a on an inner peripheral surface thereof, and has a substantially v-21274h-shaped longitudinal section.
When the outer member 12 and the inner member 14 are joined, the outer member 12 is concentric with the inner member 14, both side ends of the outer member 12 in the height direction are machined to be bent in the centripetal direction of the outer member 12, so that the outer member 12 has a v-21274; shaped longitudinal section, and the v-21274; shaped inner surface of the outer member 12 forms a first cooling passage wall face portion 12a that surrounds one side of the cooling passage 16 in the circumferential direction.
Further, the tips of both side ends of the outer member 12, which are bent in the centripetal direction of the outer member 12, form a first engaging surface portion 12b that is airtightly attached to the inner member 14 when the outer member 12 and the inner member 14 are engaged.
The first cooling passage wall portion 12a extends without interruption in the circumferential surface direction of the outer member 12, and the first joint surface portions 12b are connected to both ends of the first cooling passage wall portion 12a in the height direction of the outer member 12.
That is, the first cooling passage wall portion 12a is formed between the two first joint surface portions 12b that are hermetically attached to the inner member 14.
Further, a cooling fluid hole 12d for passing a cooling fluid is provided in the outer member 12.
Referring to fig. 6A to 6B, the inner member 14 is an annular belt-shaped member having a second cooling passage wall surface portion 14a on an outer peripheral surface thereof, and has a substantially v-21274h-shaped longitudinal section.
When the outer member 12 and the inner member 14 are joined, the inner member 14 is concentric with the outer member 12, both side ends of the inner member 14 in the height direction are worked to be bent toward a direction opposite to the centrifugal direction, so that the inner member 14 has a v 21274; shaped longitudinal section, and the v 21274; shaped outer surface of the inner member 14 forms a second cooling passage wall face portion 14a that surrounds the other side of the cooling passage 16 in the circumferential direction.
Further, the tips of both side ends of the inner member 14, which are bent toward the direction opposite to the centrifugal direction of the inner member 14, form a second engagement surface portion 14b that is airtightly attached to the outer member 12 when the outer member 12 and the inner member 14 are engaged.
The second cooling passage wall portion 14a extends without interruption in the circumferential surface direction of the inner member 14, and the second joint surface portions 14b are connected to both ends of the second passage wall portion 14a in the height direction of the inner member 14.
That is, the second cooling passage wall portion 14a is formed between the two second joint surface portions 14b that are hermetically attached to the external member 12.
The joining of the outer member 12 and the inner member 14 is performed in a state where the inner member 14 is disposed concentrically with each other inside the outer member 12 and the first joining surface portion 12b of the outer member 12 and the second joining surface portion 14b of the inner member 14 are in airtight contact with each other, thereby forming the cooling passage 16 in an airtight sealed state surrounded by the first cooling passage wall portion 12a and the second cooling passage wall portion 14a (refer to fig. 7).
As shown in fig. 8A to 8B and fig. 9A to 9B, one or more protrusions may be formed on at least one of the first cooling passage wall face portion 12a and the second cooling passage wall face portion 14 a.
First, as shown in fig. 8A to 8B, if the protrusions 14c are formed on the second cooling passage wall face portion 14a of the inner member 14', one or more protrusions 14c may protrude from the surface of the second cooling passage wall face portion 14 a.
The protrusion 14c is formed in a rib shape extending without interruption in the circumferential surface direction of the second cooling passage wall surface portion 14a in consideration of the flow of the cooling fluid flowing along the cooling passage 16. The protrusions 14c increase the heat radiation area of the second cooling passage wall surface portion 14a in contact with the cooling fluid, thereby contributing to effective cooling of the stator adjacent to the inner peripheral surface of the inner member 14'.
If a plurality of projections 14c are formed, the projections 14c are spaced apart from each other in the height direction of the inner member 14'.
Further, as shown in fig. 9A to 9B, if the protrusions 12c are formed on the first cooling passage wall face portion 12a of the outer member 12', one or more protrusions 12c may protrude from the surface of the first cooling passage wall face portion 12 a.
The protrusion 12c is formed in a rib shape extending without interruption in the circumferential surface direction of the first cooling passage wall surface portion 12a in consideration of the flow of the cooling fluid flowing along the cooling passage 16. The protrusions 14c cause irregular flow in the flow of the cooling fluid, thereby increasing turbulence, thereby contributing to efficient cooling of the stator.
Although not shown in the drawings, the stator 200 including the plurality of concentrated winding segmented cores 210 arranged in a ring shape as shown in fig. 1A is press-fitted into the stator support member 10 during a process of assembling the rotary electric machine, whereby the stator support member 10 can support and fix the ring-shaped arrangement of the press-fitted segmented cores 210.
Hereinafter, a method of manufacturing the above-described two-piece support member 10 will be described.
First, the annular structures of the stator supporting member 10, i.e., the outer part 12 and the inner part 14, are molded separately.
The outer member 12 is an annular belt-shaped member having a first cooling passage wall face portion 12a on an inner peripheral surface thereof, and the inner member 14 is an annular belt-shaped member having a second cooling passage wall face portion 14a on an outer peripheral surface thereof.
The outer component 12 and the inner component 14 have a simple structure with a v-21274h-shaped longitudinal section that can be formed by forging, and are thus formed separately by forging. Thereafter, the outer member 12 and the inner member 14 are joined in a state where the first cooling passage wall face portion 12a and the second cooling passage wall face portion 14a face each other, thereby completing the formation of the cooling passage 16 in a hermetically sealed state surrounded by the first cooling passage wall face portion 12a and the second cooling passage wall face portion 14 a.
Even if the outer member 12 and the inner member 14 are manufactured by casting, the core material, the flushing holes, and the like may be omitted.
The separately formed outer component 12 and inner component 14 may be joined by welding. Here, after the inner member 14 is disposed within the outer member 12 such that the first joint surface portion 12b of the outer member 12 and the second joint surface portion 14b of the inner member 14 are in contact with each other, welding is performed at the contact surface between the first joint surface portion 12b and the second joint surface portion 14b, thereby fixing the outer member 12 and the inner member 14 in a state where the outer member 12 and the inner member 14 are in airtight contact with each other.
The above-described stator support member 10 of the rotary electric machine manufactured by forming two pieces having a simple structure, respectively, and then joining the two pieces together to form the cooling passage 16 has the following advantages.
First, since the outer part 12 and the inner part 14 forming the stator support member 10 have a simple structure, the outer part 12 and the inner part 14 can be easily machined by forging instead of casting using a core material.
Accordingly, various defects such as bubbles, cold shut, etc., which may be generated when casting is performed, may be avoided, and the outer member 12 and the inner member 14 are separately formed by forging, and thus, manufacturing quality may be improved.
Further, a core material, a flushing hole, and the like required for performing casting may be omitted, whereby productivity may be improved.
Second, since the stator supporting member 10 is manufactured by joining the outer member 12 and the inner member 14 divided with the cooling passage 16 as a reference, visual inspection of the outer member 12 and the inner member 14 can be easily performed before the joining process, whereby the manufacturing quality can be improved.
In the case where the conventional support member is manufactured by casting, visual inspection of the cooling passage wall face portion formed in the conventional support member cannot be achieved.
Third, the protrusions 12c and 14c that increase the heat dissipation area or increase the turbulence like the cooling fins can be easily added to the cooling passage wall face portions 12a and 14a that surround the cooling passage 16, whereby the cooling performance can be improved.
As apparent from the above description, a stator supporting member of a rotary electric machine is manufactured by separately forming two workpieces having a simple structure and then joining the two workpieces together to form a cooling passage therein, thereby improving cooling performance, productivity, and quality level while maintaining the same external structure.
The present disclosure has been described in detail with reference to embodiments thereof. However, it will be appreciated by those skilled in the art that changes could be made to these embodiments without departing from the principles and concepts of the disclosure.
Claims (4)
1. A stator support member of a rotary electric machine for supporting a stator formed of a plurality of segment cores arranged in a ring shape, the stator support member comprising:
an annular outer member provided with a first cooling passage wall surface portion formed on an inner peripheral surface of the annular outer member;
an annular inner member provided with a second cooling passage wall surface portion formed on an outer peripheral surface of the annular inner member; and
a single cooling passage formed by joining the annular outer member and the annular inner member together, surrounded by the first cooling passage wall face portion and the second cooling passage wall face portion,
wherein one or more protrusions are formed on each of the first cooling passage wall surface portion and the second cooling passage wall surface portion, and
the protrusion is formed in a rib shape extending without interruption in the circumferential surface direction of each of the first cooling passage wall surface portion and the second cooling passage wall surface portion.
2. A method of manufacturing a stator support member of a rotary electric machine for supporting a stator formed of a plurality of segmented cores arranged in a ring shape, comprising the steps of:
forming an annular outer member having a first cooling passage wall surface portion formed on an inner peripheral surface thereof and an annular inner member having a second cooling passage wall surface portion formed on an outer peripheral surface thereof; and
forming only one cooling passage surrounded by the first cooling passage wall face portion and the second cooling passage wall face portion by joining the annular outer member and the annular inner member together,
wherein one or more protrusions are formed on each of the first cooling passage wall surface portion and the second cooling passage wall surface portion, and
the protrusion is formed in a rib shape extending without interruption in the circumferential surface direction of each of the first cooling passage wall surface portion and the second cooling passage wall surface portion.
3. The method according to claim 2, wherein first joining face portions are formed at both side ends of the first cooling passage wall portion, second joining face portions are formed at both side ends of the second cooling passage wall portion, and the annular outer member and the annular inner member are fixed to each other by welding in a state where the first joining face portions and the second joining face portions are in contact with each other at the time of forming the cooling passage.
4. The method of claim 2, wherein the annular outer component and the annular inner component are machined by forging.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0151704 | 2016-11-15 | ||
| KR1020160151704A KR20180054136A (en) | 2016-11-15 | 2016-11-15 | Stator support member of rotating electric machine and manufacturing method of the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108075581A CN108075581A (en) | 2018-05-25 |
| CN108075581B true CN108075581B (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710886730.XA Active CN108075581B (en) | 2016-11-15 | 2017-09-22 | Stator support member for rotating electric machine and method for manufacturing same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10886798B2 (en) |
| KR (1) | KR20180054136A (en) |
| CN (1) | CN108075581B (en) |
| DE (1) | DE102017216816A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113169631A (en) * | 2018-12-19 | 2021-07-23 | 三菱电机株式会社 | Rotating electrical machine integrated with vehicle control device |
| DE102019214695A1 (en) * | 2019-09-25 | 2021-03-25 | Mahle International Gmbh | Electric drive device and manufacturing method for a heat exchanger device, in particular for use in an electric drive device |
| DE102019214696A1 (en) * | 2019-09-25 | 2021-03-25 | Mahle International Gmbh | Electric drive device and manufacturing method for a heat exchanger device, in particular for use in an electric drive device |
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| EP2395629A1 (en) * | 2010-06-11 | 2011-12-14 | Siemens Aktiengesellschaft | Stator element |
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| DE102013213435A1 (en) * | 2013-07-09 | 2015-01-15 | Schaeffler Technologies Gmbh & Co. Kg | Cooling system for a dynamoelectric machine |
| JP6295726B2 (en) * | 2014-03-03 | 2018-03-20 | コベルコ建機株式会社 | Electric motor |
| GB201512663D0 (en) * | 2015-07-20 | 2015-08-26 | Rolls Royce Plc | Electrical machines |
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2016
- 2016-11-15 KR KR1020160151704A patent/KR20180054136A/en not_active Application Discontinuation
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2017
- 2017-09-19 US US15/708,639 patent/US10886798B2/en active Active
- 2017-09-22 CN CN201710886730.XA patent/CN108075581B/en active Active
- 2017-09-22 DE DE102017216816.1A patent/DE102017216816A1/en active Pending
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| JP2006296005A (en) * | 2005-04-06 | 2006-10-26 | Honda Motor Co Ltd | Liquid-cooled motor |
| CN103944291A (en) * | 2013-01-17 | 2014-07-23 | 三菱电机株式会社 | Rotary electric machine |
| WO2016174711A1 (en) * | 2015-04-27 | 2016-11-03 | 三菱電機株式会社 | Rotating electric machine |
| CN107528424A (en) * | 2016-06-22 | 2017-12-29 | 本田技研工业株式会社 | Electric rotating machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017216816A1 (en) | 2018-05-30 |
| US10886798B2 (en) | 2021-01-05 |
| US20180138762A1 (en) | 2018-05-17 |
| KR20180054136A (en) | 2018-05-24 |
| CN108075581A (en) | 2018-05-25 |
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